Skip to content
Manage My Life

What does the E21 error code indicate on my Healthrider Soft Strider EX treadmill model 831.297870?

I have a Healthrider Soft Strider EX treadmill model 831.297870. It displays the error code of E21. What does this mean and how do I fix it?

Sign in to answer a question
2 Answers from these members:
Lyle W
The E21 error code indicates that the console is not receiving the speed sensor signal that it is expecting. I provided the technical information for this treadmill in the images below. If you are confident in your technical abilities to safely check voltage on the unit, you can check for the 5 VDC pulsing signal when the belt is moved as explained in the technical data below. If the console is getting the proper signal then it will need to be replaced. If the console is not receiving the pulsing 5 VDC signal when the belt is moving then you will need to check the wiring and the speed sensor.

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:

Sears Home Services

by Lyle W Earned 1,432 community points in Treadmills
March 24th, 2010
0 votes
Manage My Life
Oh please get ahold of the if you want a accurate answer
by Manage My Life
May 17th, 2010
0 votes
Didn't find what you are looking for? Ask a question